For the ToK question no.4, could you suggest any sample KI? 4. “That which is accepted as knowledge today is sometimes discarded tomorrow.” Consider knowledge issues raised by this statement in two areas of knowledge”

I currently hold a Japanese citizenship, and I can also get a British passport because I was born there. However, I did not live in the UK long enough after I was born, so I did not receive a British citizenship nor a passport. I grew up in Japan after living in the UK (for a short amount of time), and now I am planning to get a British passport, if there are any benefactors that exist when I apply to the universities in the UK. Can you please list some of the benefits of holding a British passport, when you're going to apply to the UK universities? Most importantly, are there any differences in terms of cost for attending UK universities with British citizenship and holding a British Passport?